"I talked to some teams, and I told them I had smoked marijuana before," Burfict said. "It's not like I'm the only person that has ever done that."

NFL.com's Mock Draft Central

With the draft now upon us, NFL.com analysts unveil their final attempts at projecting how Round 1 will go.
More ...

Burfict said he no longer uses the drug.

NFL Network contributor and Fox Sports insider Jay Glazer reported earlier Wednesday that NFL teams were informed this week the Arizona State linebacker had failed a drug test. But Burfict said league officials haven't notified him of that.

Burfict was an All-American as a sophomore, but his performance declined last season. At the NFL Scouting Combine in February, he ran a sluggish 40-yard dash -- a high 4.9- to 5.0-second clocking that he improved to 4.79 to 4.85 seconds at his March pro day. He also reportedly struggled during interviews.

"That's his job," Burfict said of Mayock's criticism. "He has to have something to talk about. Mike Mayock doesn't know me, he's never interviewed me. I have a lot of respect for Mayock. I don't know why he has no respect for me. I'm a human being. I'm not letting it get to me."

If he could talk to Mayock, Burfict said he would ask: "Why is he being so hurtful to a young man and trying to trash me? I think about what he said with every rep that I do in the weight room. I use the criticism as motivation, but I like Mayock. I have a lot of respect for him. I would just ask him to be fair."